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Line 6 Parts


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#1 musicman39507

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Posted 06 July 2013 - 07:50 PM

Hello,

        Ihave on older line 6 spider iii 75 watt. I had to take the head out to change a cable in it. While I have it apart it's got me real curious as to what all the parts are and what they do? Can anyone tell what the power amp section is and what the preamp section is and the digital effects section is? I just wanna know now that I have it all apart, it's really got me intrigued. It's got a big ole transformer way on the left side with 75 stamped on it? Is that the power amp>? Hence it's a 75 watt amp? Don't worry I know better than to prod around with any of the stuff cause I don't do electrocution too well. Thanks to everyone.

musicman39507  


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#2 pmaillot

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Posted 17 July 2013 - 04:37 AM

Hi,

 

Close to the input jack there's a small pream that provides two different levels to the preamp/effect section. The preamp/effect section is the main board that sits in the middle with rather big (2"x2" or so chip(s) on it). The signal from the input jack is first transformed to digital and from there it goes to the big chip (a Ddigital Signal Pprocessor) where effects, patch management, volume and tone settings take place. The DSP is controlled by a set of pots/knobs all gathered on the front Printed Circuit Board; electrical values/signals are read from the positions of the knobs to "tell" the DSP how to manage the guitar signal. Finally the signal is turned back into analog again before entering the Main Amplifier section, another PCB with essentially one big chip on it, itself attached to a heatsink. The big transformer is to change the mains voltage to something adequate to the power amplifier and other preamp sections.

 

Hope this helps,

-Patrick


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#3 musicman39507

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Posted 17 July 2013 - 03:24 PM

Yea man it explains a good deal of it,,,,I just had to open it up and was like WOW what does this do????what does that do???? I'm sure you know the feeling,,,lol But thanks man sure glad you took the time to explain that all to me.<br />Good day to ya,<br />musicman39507
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